You may want to consider adding a table Family (or something close) because you could potentially have more than one student from a family
This table would be the parent table for the child table tblstudent.
Phone numbers, address, and other info, of this nature would reside in the family table.
Plus a reliable way to search records is by using a telephone number (customers usually always know their phone number) so you could make a form Families with a subform Student. You could search this form with a drop down list displaying phone numbers.
Double click the student (field) that was returned by a search and open a form for that student (This requires some code).
Just a thought.