The University shall maintain at the University, for a period of not less than 6 weeks during the summer of each year, a school for teachers and instructional aides in which shall be given courses in pedagogy and such other subjects as will give increased efficiency to those who are now teaching or providing instructional assistance or wish to prepare to teach in the free public schools of this State. The courses given in the school shall be arranged by the University. All persons who are now teaching, or providing instructional assistance or who will give satisfactory assurance to the Department of Education that they intend to teach in the free public schools of this State shall be admitted into the school, so long as class space is available and provided their applications are approved by the Department. Tuition shall be free to all Delaware teachers and instructional aides who meet University requirements.