diff --git a/src/components/Admin/resources/competition/event-registration/EventRegistrationCreate.tsx b/src/components/Admin/resources/competition/event-registration/EventRegistrationCreate.tsx
index 91f64fc6..9b866f25 100644
--- a/src/components/Admin/resources/competition/event-registration/EventRegistrationCreate.tsx
+++ b/src/components/Admin/resources/competition/event-registration/EventRegistrationCreate.tsx
@@ -1,23 +1,39 @@
 import {FC} from 'react'
-import {AutocompleteInput, ReferenceInput, required, SimpleForm} from 'react-admin'
+import {AutocompleteInput, RaRecord, ReferenceInput, required, SimpleForm} from 'react-admin'
+import {useFormContext} from 'react-hook-form'
 
 import {MyCreate} from '@/components/Admin/custom/MyCreate'
 
-export const EventRegistrationCreate: FC = () => (
-  <MyCreate>
-    <SimpleForm>
-      <ReferenceInput source="profile" reference="personal/profiles">
-        <AutocompleteInput optionText="verbose_name" fullWidth validate={required()} />
-      </ReferenceInput>
-      <ReferenceInput source="school" reference="personal/schools">
-        <AutocompleteInput optionText="verbose_name" fullWidth validate={required()} />
-      </ReferenceInput>
-      <ReferenceInput source="grade" reference="competition/grade">
-        <AutocompleteInput optionText="name" fullWidth validate={required()} />
-      </ReferenceInput>
-      <ReferenceInput source="event" reference="competition/event">
-        <AutocompleteInput optionText="verbose_name" fullWidth validate={required()} />
-      </ReferenceInput>
-    </SimpleForm>
-  </MyCreate>
-)
+const ProfileInput = () => {
+  const {setValue} = useFormContext()
+  const prefill = (_: number, profile: RaRecord | string) => {
+    if (typeof profile === 'string') return
+    setValue('school', profile.school.code)
+    setValue('grade', profile.grade)
+  }
+
+  return (
+    <ReferenceInput source="profile" reference="personal/profiles">
+      <AutocompleteInput optionText="verbose_name" fullWidth validate={required()} onChange={prefill} />
+    </ReferenceInput>
+  )
+}
+
+export const EventRegistrationCreate: FC = () => {
+  return (
+    <MyCreate>
+      <SimpleForm>
+        <ProfileInput />
+        <ReferenceInput source="school" reference="personal/schools">
+          <AutocompleteInput optionText="verbose_name" fullWidth validate={required()} />
+        </ReferenceInput>
+        <ReferenceInput source="grade" reference="competition/grade">
+          <AutocompleteInput optionText="name" fullWidth validate={required()} />
+        </ReferenceInput>
+        <ReferenceInput source="event" reference="competition/event">
+          <AutocompleteInput optionText="verbose_name" fullWidth validate={required()} />
+        </ReferenceInput>
+      </SimpleForm>
+    </MyCreate>
+  )
+}