Notwithstanding the provisions of any general statute, charter or special act to the contrary, affecting teacher tenure: (1) Service by teachers employed by The University of Connecticut to teach at the E. O. Smith School prior to the conveyance of the E. O. Smith School pursuant to section 2 of special act 84-42 shall be treated as continuous employment by a board of education within the meaning of § 10-151. Any such teacher who is subsequently employed to teach at the E. O. Smith School on or before September 1, 1987, by the board of education for a regional school district consisting of the towns of Mansfield and Ashford shall be deemed to have been continuously employed by such board of education for all previous years of continuous employment at the E. O. Smith School. No teacher employed by such board of education shall be deemed to have a break in employment within the meaning of § 10-151 by virtue of such conveyance; (2) teachers employed by The University of Connecticut on the date of such conveyance who are subsequently employed to teach at said school by the board of education for a regional school district consisting of the towns of Mansfield and Ashford and who are participants in the state employees retirement system on the date of such conveyance may continue to participate in said system. Participation pursuant to the provisions of this section shall terminate upon retirement or separation from employment by such board of education, whichever first occurs. The employer contribution for retirement benefits for such teachers shall continue to be included in amounts appropriated from the General Fund pursuant to § 5-192d; (3) such teachers who are participants in the federal Old Age and Survivors Insurance System on the date of such conveyance may continue to participate in said system provided such teachers make employee contributions determined by the State Employees Retirement Commission to be due under the federal-state agreement. The state shall continue to pay the employer’s share of contributions determined to be due by the State Employees Retirement Commission under the federal-state agreement for such teachers pursuant to § 5-192d.