diff --git a/api/src/routes/admin.rs b/api/src/routes/admin.rs
index 15f6823..2479ed3 100644
--- a/api/src/routes/admin.rs
+++ b/api/src/routes/admin.rs
@@ -2,7 +2,7 @@ use std::net::{SocketAddr, IpAddr, Ipv4Addr};
 
 use portfolio_core::{
     crypto::random_8_char_string,
-    services::{admin_service::AdminService, candidate_service::CandidateService, application_service::ApplicationService, portfolio_service::PortfolioService}, responses::{BaseCandidateResponse, CreateCandidateResponse}, candidate_details::ApplicationDetails, sea_orm::prelude::Uuid,
+    services::{admin_service::AdminService, candidate_service::CandidateService, application_service::ApplicationService, portfolio_service::PortfolioService}, models::candidate::{BaseCandidateResponse, CreateCandidateResponse, ApplicationDetails}, sea_orm::prelude::Uuid,
 };
 use requests::{AdminLoginRequest, RegisterRequest};
 use rocket::http::{Cookie, Status, CookieJar};
@@ -192,7 +192,7 @@ pub async fn get_candidate_portfolio(
 
 #[cfg(test)]
 pub mod tests {
-    use portfolio_core::responses::CreateCandidateResponse;
+    use portfolio_core::models::candidate::CreateCandidateResponse;
     use rocket::{local::blocking::Client, http::{Cookie, Status}};
 
     use crate::test::tests::{test_client, ADMIN_PASSWORD, ADMIN_ID};
diff --git a/api/src/routes/candidate.rs b/api/src/routes/candidate.rs
index 93b4d6f..f87854b 100644
--- a/api/src/routes/candidate.rs
+++ b/api/src/routes/candidate.rs
@@ -1,6 +1,6 @@
 use std::net::{IpAddr, Ipv4Addr, SocketAddr};
 
-use portfolio_core::candidate_details::ApplicationDetails;
+use portfolio_core::models::candidate::ApplicationDetails;
 use portfolio_core::sea_orm::prelude::Uuid;
 use portfolio_core::services::application_service::ApplicationService;
 use portfolio_core::services::candidate_service::CandidateService;
@@ -264,7 +264,7 @@ pub async fn download_portfolio(session: CandidateAuth) -> Result<Vec<u8>, Custo
 
 #[cfg(test)]
 mod tests {
-    use portfolio_core::{candidate_details::ApplicationDetails, crypto, sea_orm::prelude::Uuid};
+    use portfolio_core::{models::candidate::ApplicationDetails, crypto, sea_orm::prelude::Uuid};
     use rocket::{
         http::{Cookie, Status},
         local::blocking::Client,
diff --git a/core/src/database/mutation/candidate.rs b/core/src/database/mutation/candidate.rs
index dbc2f55..04f90e8 100644
--- a/core/src/database/mutation/candidate.rs
+++ b/core/src/database/mutation/candidate.rs
@@ -1,4 +1,4 @@
-use crate::{candidate_details::EncryptedApplicationDetails, Mutation};
+use crate::{Mutation, models::candidate_details::EncryptedApplicationDetails};
 
 use ::entity::candidate::{self};
 use sea_orm::*;
@@ -67,8 +67,8 @@ impl Mutation {
 
 #[cfg(test)]
 mod tests {
-    use crate::candidate_details::tests::APPLICATION_DETAILS;
-    use crate::candidate_details::{EncryptedApplicationDetails};
+    use crate::models::candidate_details::EncryptedApplicationDetails;
+    use crate::models::candidate_details::tests::APPLICATION_DETAILS;
     use crate::utils::db::get_memory_sqlite_connection;
     use crate::{Mutation, Query};
 
diff --git a/core/src/database/mutation/parent.rs b/core/src/database/mutation/parent.rs
index c31298c..0001700 100644
--- a/core/src/database/mutation/parent.rs
+++ b/core/src/database/mutation/parent.rs
@@ -1,4 +1,4 @@
-use crate::{candidate_details::EncryptedApplicationDetails, Mutation};
+use crate::{Mutation, models::candidate_details::EncryptedApplicationDetails};
 
 use ::entity::parent::{self, Model};
 use sea_orm::*;
@@ -34,8 +34,8 @@ impl Mutation {
 
 #[cfg(test)]
 mod tests {
-    use crate::candidate_details::tests::APPLICATION_DETAILS;
-    use crate::candidate_details::{EncryptedApplicationDetails};
+    use crate::models::candidate_details::EncryptedApplicationDetails;
+    use crate::models::candidate_details::tests::APPLICATION_DETAILS;
     use crate::utils::db::get_memory_sqlite_connection;
     use crate::{Mutation, Query};
 
diff --git a/core/src/database/query/candidate.rs b/core/src/database/query/candidate.rs
index ae24441..f41cd0b 100644
--- a/core/src/database/query/candidate.rs
+++ b/core/src/database/query/candidate.rs
@@ -1,45 +1,11 @@
 use sea_orm::*;
-use serde::Serialize;
 
 use ::entity::{candidate, candidate::Entity as Candidate, parent};
 
-use crate::Query;
+use crate::{Query, models::candidate::CandidateWithParent};
 
 pub const PAGE_SIZE: u64 = 20;
 
-#[derive(FromQueryResult, Serialize)]
-pub struct CandidateParentResult {
-    pub application: i32,
-    pub name: Option<String>,
-    pub surname: Option<String>,
-    pub study: Option<String>,    
-    pub citizenship: Option<String>,
-
-    pub parent_name: Option<String>,
-    pub parent_surname: Option<String>,
-}
-
-#[derive(FromQueryResult, Serialize, Default)]
-pub struct CandidateWithParent { // TODO: use this instead of (Candidate, Parent)???
-    pub application: i32,
-    pub name: Option<String>,
-    pub surname: Option<String>,
-    pub birthplace: Option<String>,
-    pub birthdate: Option<String>,
-    pub address: Option<String>,
-    pub telephone: Option<String>,
-    pub citizenship: Option<String>,
-    pub email: Option<String>,
-    pub sex: Option<String>,
-    pub study: Option<String>,
-    pub personal_identification_number: Option<String>,
-
-    pub parent_name: Option<String>,
-    pub parent_surname: Option<String>,
-    pub parent_telephone: Option<String>,
-    pub parent_email: Option<String>,
-}
-
 #[derive(FromQueryResult)]
 pub struct ApplicationId {
     application: i32,
@@ -51,6 +17,18 @@ impl ApplicationId {
     }
 }
 
+#[derive(FromQueryResult)]
+pub struct CandidateParentResult {
+    pub application: i32,
+    pub name: Option<String>,
+    pub surname: Option<String>,
+    pub study: Option<String>,    
+    pub citizenship: Option<String>,
+
+    pub parent_name: Option<String>,
+    pub parent_surname: Option<String>,
+}
+
 impl Query {
     pub async fn find_candidate_by_id(
         db: &DbConn,
diff --git a/core/src/lib.rs b/core/src/lib.rs
index e58447a..c429793 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -7,7 +7,6 @@ pub mod database;
 pub mod crypto;
 pub mod services;
 pub mod error;
-pub mod candidate_details;
 pub mod responses;
 pub mod utils;
-
+pub mod models;
diff --git a/core/src/models/candidate.rs b/core/src/models/candidate.rs
new file mode 100644
index 0000000..0f7688c
--- /dev/null
+++ b/core/src/models/candidate.rs
@@ -0,0 +1,98 @@
+use chrono::NaiveDate;
+use sea_orm::FromQueryResult;
+use serde::{Serialize, Deserialize};
+
+use crate::{error::ServiceError};
+
+use super::candidate_details::decrypt_if_exists;
+
+/// Create candidate (admin endpoint)
+/// Password change  (admin endpoint)
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct CreateCandidateResponse {
+    pub application_id: i32,
+    pub personal_id_number: String,
+    pub password: String,
+}
+
+/// List candidates (admin endpoint)
+#[derive(Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct BaseCandidateResponse {
+    pub application_id: i32,
+    pub name: String,
+    pub surname: String,
+    pub study: String,
+    pub submitted: bool,
+}
+
+/// Candidate details (admin and candidate endpoints)
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct ApplicationDetails {
+    // Candidate
+    pub name: String,
+    pub surname: String,
+    pub birthplace: String,
+    pub birthdate: NaiveDate, // TODO: User NaiveDate or String?
+    pub address: String,
+    pub telephone: String,
+    pub citizenship: String,
+    pub email: String,
+    pub sex: String,
+    pub study: String,
+    pub personal_id_number: String,
+    // Parent
+    pub parent_name: String,
+    pub parent_surname: String,
+    pub parent_telephone: String,
+    pub parent_email: String,
+}
+
+/// CSV export (admin endpoint)
+#[derive(FromQueryResult, Serialize, Default)]
+#[serde(rename_all = "camelCase")]
+pub struct CandidateWithParent { // TODO: use this instead of (Candidate, Parent)???
+    pub application: i32,
+    pub name: Option<String>,
+    pub surname: Option<String>,
+    pub birthplace: Option<String>,
+    pub birthdate: Option<String>,
+    pub address: Option<String>,
+    pub telephone: Option<String>,
+    pub citizenship: Option<String>,
+    pub email: Option<String>,
+    pub sex: Option<String>,
+    pub study: Option<String>,
+    pub personal_identification_number: Option<String>,
+
+    pub parent_name: Option<String>,
+    pub parent_surname: Option<String>,
+    pub parent_telephone: Option<String>,
+    pub parent_email: Option<String>,
+}
+
+impl BaseCandidateResponse {
+    pub async fn from_encrypted(
+        private_key: &String,
+        application_id: i32,
+        name_opt: Option<String>,
+        surname_opt: Option<String>,
+        study_opt: Option<String>,
+        submitted: bool,
+    ) -> Result<Self, ServiceError> {
+        let name = decrypt_if_exists(private_key, name_opt).await?;
+        let surname = decrypt_if_exists(private_key, surname_opt).await?;
+        Ok(
+            Self {
+                name,
+                application_id,
+                surname,
+                study: study_opt.unwrap_or("".to_string()),
+                submitted,
+            }
+        )
+    }
+
+}
\ No newline at end of file
diff --git a/core/src/candidate_details.rs b/core/src/models/candidate_details.rs
similarity index 95%
rename from core/src/candidate_details.rs
rename to core/src/models/candidate_details.rs
index 0f7db19..f0de1fb 100644
--- a/core/src/candidate_details.rs
+++ b/core/src/models/candidate_details.rs
@@ -1,15 +1,36 @@
 use chrono::NaiveDate;
-use serde::{Deserialize, Serialize};
 
 use entity::{candidate, parent};
 
-use crate::{crypto, database::query::candidate::CandidateWithParent, error::ServiceError};
+use crate::{crypto, models::candidate::{CandidateWithParent, ApplicationDetails}, error::ServiceError};
 
 pub const NAIVE_DATE_FMT: &str = "%Y-%m-%d";
 
 #[derive(Clone)]
 pub struct EncryptedString(String);
 
+#[derive(Clone)]
+pub struct EncryptedApplicationDetails {
+    // Candidate
+    pub name: EncryptedString,
+    pub surname: EncryptedString,
+    pub birthplace: EncryptedString,
+    pub birthdate: EncryptedString,
+    pub address: EncryptedString,
+    pub telephone: EncryptedString,
+    pub citizenship: EncryptedString,
+    pub email: EncryptedString,
+    pub sex: EncryptedString,
+    pub personal_id_number: EncryptedString,
+    pub study: String,
+
+    // Parent
+    pub parent_name: EncryptedString,
+    pub parent_surname: EncryptedString,
+    pub parent_telephone: EncryptedString,
+    pub parent_email: EncryptedString,
+}
+
 impl EncryptedString {
     pub async fn new(s: &str, recipients: &Vec<String>) -> Result<Self, ServiceError> {
         let recipients = recipients.iter().map(|s| &**s).collect();
@@ -65,28 +86,6 @@ impl TryFrom<Option<NaiveDate>> for EncryptedString {
     }
 }
 
-#[derive(Clone)]
-pub struct EncryptedApplicationDetails {
-    // Candidate
-    pub name: EncryptedString,
-    pub surname: EncryptedString,
-    pub birthplace: EncryptedString,
-    pub birthdate: EncryptedString,
-    pub address: EncryptedString,
-    pub telephone: EncryptedString,
-    pub citizenship: EncryptedString,
-    pub email: EncryptedString,
-    pub sex: EncryptedString,
-    pub personal_id_number: EncryptedString,
-    pub study: String,
-
-    // Parent
-    pub parent_name: EncryptedString,
-    pub parent_surname: EncryptedString,
-    pub parent_telephone: EncryptedString,
-    pub parent_email: EncryptedString,
-}
-
 impl EncryptedApplicationDetails {
     pub async fn new(
         form: &ApplicationDetails,
@@ -224,27 +223,15 @@ impl TryFrom<CandidateWithParent> for EncryptedApplicationDetails {
     }
 }
 
-
-
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone)]
-pub struct ApplicationDetails {
-    // Candidate
-    pub name: String,
-    pub surname: String,
-    pub birthplace: String,
-    pub birthdate: NaiveDate, // TODO: User NaiveDate or String?
-    pub address: String,
-    pub telephone: String,
-    pub citizenship: String,
-    pub email: String,
-    pub sex: String,
-    pub study: String,
-    pub personal_id_number: String,
-    // Parent
-    pub parent_name: String,
-    pub parent_surname: String,
-    pub parent_telephone: String,
-    pub parent_email: String,
+// TODO: use this more???
+pub async fn decrypt_if_exists(
+    private_key: &String,
+    encrypted_string: Option<String>,
+) -> Result<String, ServiceError> {
+    match EncryptedString::try_from(encrypted_string) {
+        Ok(encrypted_string) => Ok(encrypted_string.decrypt(private_key).await?),
+        Err(_) => Ok(String::from("")),
+    }
 }
 
 #[cfg(test)]
diff --git a/core/src/models/mod.rs b/core/src/models/mod.rs
new file mode 100644
index 0000000..6cd26ab
--- /dev/null
+++ b/core/src/models/mod.rs
@@ -0,0 +1,2 @@
+pub mod candidate_details;
+pub mod candidate;
\ No newline at end of file
diff --git a/core/src/responses.rs b/core/src/responses.rs
index a1ccf56..e69de29 100644
--- a/core/src/responses.rs
+++ b/core/src/responses.rs
@@ -1,53 +0,0 @@
-use serde::{Serialize, Deserialize};
-
-use crate::{candidate_details::EncryptedString, error::ServiceError};
-
-#[derive(Debug, Serialize, Deserialize)]
-pub struct CreateCandidateResponse {
-    pub application_id: i32,
-    pub personal_id_number: String,
-    pub password: String,
-}
-
-#[derive(Debug, Serialize)]
-pub struct BaseCandidateResponse {
-    pub application_id: i32,
-    pub name: String,
-    pub surname: String,
-    pub study: String,
-    pub submitted: bool,
-}
-
-impl BaseCandidateResponse {
-    pub async fn from_encrypted(
-        private_key: &String,
-        application_id: i32,
-        name_opt: Option<String>,
-        surname_opt: Option<String>,
-        study_opt: Option<String>,
-        submitted: bool,
-    ) -> Result<Self, ServiceError> {
-        let name = decrypt_if_exists(private_key, name_opt).await?;
-        let surname = decrypt_if_exists(private_key, surname_opt).await?;
-        Ok(
-            Self {
-                name,
-                application_id,
-                surname,
-                study: study_opt.unwrap_or("".to_string()),
-                submitted,
-            }
-        )
-    }
-
-}
-
-async fn decrypt_if_exists(
-    private_key: &String,
-    encrypted_string: Option<String>,
-) -> Result<String, ServiceError> {
-    match EncryptedString::try_from(encrypted_string) {
-        Ok(encrypted_string) => Ok(encrypted_string.decrypt(private_key).await?),
-        Err(_) => Ok(String::from("")),
-    }
-}
\ No newline at end of file
diff --git a/core/src/services/application_service.rs b/core/src/services/application_service.rs
index e245a4b..d8ad37f 100644
--- a/core/src/services/application_service.rs
+++ b/core/src/services/application_service.rs
@@ -1,7 +1,7 @@
 use entity::{candidate, parent};
 use sea_orm::DbConn;
 
-use crate::{error::ServiceError, candidate_details::{ApplicationDetails, EncryptedApplicationDetails}, Query, utils::db::get_recipients};
+use crate::{error::ServiceError, Query, utils::db::get_recipients, models::candidate_details::{EncryptedApplicationDetails}, models::candidate::ApplicationDetails};
 
 use super::{parent_service::ParentService, candidate_service::CandidateService};
 
diff --git a/core/src/services/candidate_service.rs b/core/src/services/candidate_service.rs
index 34cd9b5..cdd7c3e 100644
--- a/core/src/services/candidate_service.rs
+++ b/core/src/services/candidate_service.rs
@@ -2,10 +2,10 @@ use entity::candidate;
 use sea_orm::{prelude::Uuid, DbConn};
 
 use crate::{
-    candidate_details::{EncryptedApplicationDetails, EncryptedString},
+    models::candidate_details::{EncryptedApplicationDetails, EncryptedString},
     crypto::{self, hash_password},
     error::ServiceError,
-    Mutation, Query, responses::{BaseCandidateResponse, CreateCandidateResponse}, utils::db::get_recipients,
+    Mutation, Query, models::candidate::{BaseCandidateResponse, CreateCandidateResponse}, utils::db::get_recipients,
 };
 
 use super::{session_service::{AdminUser, SessionService}, application_service::ApplicationService, portfolio_service::PortfolioService};
@@ -254,11 +254,11 @@ impl CandidateService {
 pub mod tests {
     use sea_orm::{DbConn};
 
-    use crate::candidate_details::tests::assert_all_application_details;
+    use crate::models::candidate_details::tests::assert_all_application_details;
     use crate::utils::db::get_memory_sqlite_connection;
     use crate::{crypto, services::candidate_service::CandidateService, Mutation};
 
-    use super::EncryptedApplicationDetails;
+    use crate::models::candidate_details::EncryptedApplicationDetails;
     use entity::{candidate, parent, admin};
 
     use crate::services::application_service::ApplicationService;
@@ -374,7 +374,7 @@ pub mod tests {
 
     #[cfg(test)]
     pub async fn put_user_data(db: &DbConn) -> (candidate::Model, parent::Model) {
-        use crate::candidate_details::tests::APPLICATION_DETAILS;
+        use crate::models::candidate_details::tests::APPLICATION_DETAILS;
 
         let plain_text_password = "test".to_string();
         let (candidate, _parent) = ApplicationService::create_candidate_with_parent(
diff --git a/core/src/services/parent_service.rs b/core/src/services/parent_service.rs
index 1990be4..3372201 100644
--- a/core/src/services/parent_service.rs
+++ b/core/src/services/parent_service.rs
@@ -1,7 +1,7 @@
 use entity::{parent};
 use sea_orm::DbConn;
 
-use crate::{error::ServiceError, Mutation, candidate_details::EncryptedApplicationDetails};
+use crate::{error::ServiceError, Mutation, models::candidate_details::EncryptedApplicationDetails};
 
 pub struct ParentService;
 
diff --git a/core/src/utils/csv.rs b/core/src/utils/csv.rs
index 3ee2e25..4faf415 100644
--- a/core/src/utils/csv.rs
+++ b/core/src/utils/csv.rs
@@ -1,5 +1,5 @@
 use sea_orm::{DbConn};
-use crate::{error::ServiceError, candidate_details::{EncryptedApplicationDetails, ApplicationDetails}, Query, database::query::candidate::CandidateWithParent};
+use crate::{error::ServiceError, models::candidate_details::{EncryptedApplicationDetails}, Query, models::candidate::{CandidateWithParent, ApplicationDetails}};
 
 
 type Row = CandidateWithParent;