; and (II) the years of experience of the full-time principals employed, based on the following categories: (aa) Less than 1 year of principal experience. (bb) At least 1 year but less than 3 years of principal experience. (cc) At least 3 years but less than 7 years of principal experience. (dd) At least 7 years but less than 15 years of principal experience. (ee) 15 or more years of principal experience. (B) Teacher data For each local educational agency and public elementary school or secondary school, the following data regarding teachers employed at all public elementary schools and secondary schools served by a local educational agency, and each such school, respectively: (i) The number of full-time teachers employed. (ii) Including the year of the data collection, but excluding student teaching and similar teaching preparation experiences— (I) the median number of years of teaching experience of full-time teachers employed