step 1, 2 and 3 of the implementation plan

app/Models/Screening.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+final class Screening extends Model
+{
+    /**
+     * Fillable attributes for mass assignment.
+     */
+    protected $fillable = [
+        'user_id',
+        'score',
+        'passed',
+    ];
+
+    /**
+     * Cast attributes to specific types.
+     */
+    protected function casts(): array
+    {
+        return [
+            'user_id' => 'integer',
+            'score' => 'integer',
+            'passed' => 'boolean',
+        ];
+    }
+
+    /**
+     * Get the user that owns this screening.
+     */
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * Get all answers for this screening.
+     */
+    public function answers(): HasMany
+    {
+        return $this->hasMany(ScreeningAnswer::class);
+    }
+
+    /**
+     * Get all sessions that reference this screening.
+     */
+    public function sessions(): HasMany
+    {
+        return $this->hasMany(Session::class);
+    }
+}