The clerk who maintains students' personal and academic records is called <em>school registrar.</em> A student is part of an institution ,so there is information about him / her that has to be neatly filed and recorded. This information is basically related with his / her academic story along with some personal matters that may affect his / her studies. To file and keep a record of these data is part of the clerical aspect of a school and this is carried out by a <em>school registar.</em>
Something along the line of (My mother has a very bubbly personality) or (My sisters is the shining star in the family) etc you can replace the initial person with anyone in your family