A School hasMany Batches.
A Batch belongsTo a School.

A Batch hasMany Students.
A Student belongsTo a Batch.

A User hasMany Schools.
A School belongsTo a User.

(A User in this system is a person external to the school that goes in
and provides teaching services to the students on a weekly basis).

$student->batch->school->user;

A Student BelongsTo a School.
A School hasMany Students.

$student->school->user;

public function view(User $user, Student $student) {

    // only the user that a student 'belongsTo' can view them

    return $user->id === $student->batch->school->user->id;

    // OR

    return $user->id === $student->school->user->id;

}

// Student Model (simplified, obviously)

$this->belongsTo(School::class);

$this->belongsTo(Batch::class);

$this->belongsTo(User::class);