; (3) fulfilling additional credit requirements needed to qualify teachers to teach dual or concurrent enrollment programs; and (4) housing supplements or special housing programs to support prospective teachers who complete student teaching placements in high-need districts. (d) Priority In awarding grants that propose to cover costs associated with teacher residency programs, the Secretary shall give priority to eligible entities that propose to carry out a program designed to prepare the following school employees for teaching licensure: (1) Paraprofessionals. (2) Other employees of the school community employed on the date of the determination. (e) Award basis In awarding grants under this section, the Secretary shall ensure that, to the extent practicable based on the applications received under subsection (b), not less than 10 percent of the grant funds available to carry out this section are designated for uses that address teacher shortage challenges in rural school districts. 4. National Database of Qualified Mentor Teachers (a) In general The Secretary shall create a national database of qualified mentor teachers who can provide student teacher supervision to participants in teacher preparation programs during their student teaching placement. (b) Database Each qualified mentor teacher database entry shall include— (1) basic information on the educational background and professional experience of the mentor, including details of the subject areas and grade levels the mentor is licensed to teach; (2) a description of the subject areas and grade levels the mentor feels most comfortable mentoring