applicant-site/app/Helpers/PositionHelper.php

<?php

namespace App\Helpers;

use App\Models\Direction;
use App\Models\Faculty;
use App\Models\EducationalInstitution;

class PositionHelper
{
    public static function faculty()
    {
        $maxPosition = Faculty::max('position');
        return $maxPosition >= 254 ? 255 : $maxPosition + 1;
    }

    public static function direction()
    {
        $maxPosition = Direction::max('position');
        return $maxPosition >= 254 ? 255 : $maxPosition + 1;
    }

    public static function educationalInstitution()
    {
        $maxPosition = EducationalInstitution::max('position');
        return $maxPosition >= 254 ? 255 : $maxPosition + 1;
    }
}