In this section, “residency requirement” means the requirement of a public senior higher education institution for a student to have resided in the State for 1 year to be considered a resident and receive in–State tuition status. For tuition purposes, a public senior higher education institution shall waive the in–State residency requirement for a public school teacher employed by a county board if: The course or program is required by the State or the county board to maintain the teacher’s present position with the county board; or The course or program maintains or improves skills required by the county board in the teacher’s current position; The teacher resides in this State and is employed as a full–time public school teacher; and The teacher has been employed as a public school teacher in the State for less than a year. A public school teacher is responsible for the difference between in–State and out–of–state tuition if: The teacher resigns or is terminated from employment with the county board; and The teacher remains enrolled in the course or program at an institution of higher education during the teacher’s first year as a Maryland resident.