Instructional Materials and Equipment. A school shall maintain instructional materials and equipment of sufficient variety, quantity, and quality, and, at an appropriate range of reading levels, to implement its educational program in each curricular area for each age, grade, instructional program, or any combination of these, based on the classification of the educational program specified on the approval document of the school. The instructional materials and equipment shall be the property of the school. Instructional materials shall include print, manipulative, audiovisual, and electronic materials and related equipment. A school shall maintain a written inventory of instructional materials and equipment owned by the school to implement the educational program specified on the approval document of the school. A school shall maintain written policies and procedures for continual upgrading of its instructional materials and equipment. Library Media Collection. A school shall maintain a library media collection that includes sufficient variety, quantity, and quality of print and nonprint items, including electronic materials and related equipment, at appropriate reading levels to support and supplement its educational program in each curricular area for each age, grade, or instructional program, or a combination of these, based on the classification of the educational program specified on the approval document of the school. The library media collection is the property of the school. A school shall maintain a minimum quantity of library media materials and equipment based on its current enrollment as follows: Ten different items per student for a nursery school or kindergarten educational program, or both; 500 different items for a school with 24 or fewer students; 750 different items for a school with 25 to 75 students, or 20 items per student, whichever is greater; and 1,500 different items for a school with more than 75 students, or 20 items per student, whichever is greater. A school shall classify and catalogue the library media collection in a manner that is appropriate for student use, and so that each item can be located and returned to the collection. A new school shall have at least 1/3 of the required collection at the beginning of the first year of operation and a written plan that specifies the number of items, kinds of items, budget, and date for acquiring the remaining items not later than the beginning of the third year of operation. A school shall maintain a written inventory of the items in the library media collection owned by the school to support and supplement the educational program specified on the approval document of the school. A school shall maintain written policies and procedures for continual upgrading of items in its library media collection.