education-project/app/Models/Student.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Validator;

class Student extends Model
{
    use HasFactory;

    protected $guarded = [
        'user_id',
        'updated_at',
    ];

    public function schoolClass()
    {
        return $this->belongsTo(SchoolClass::class, 'class_id');
    }

}