All teachers' certificates in force in this Commonwealth at the time this act goes into effect shall continue in full force and effect, subject to all the terms and conditions under which they were issued, until they expire by virtue of their own limitations, unless they are sooner annulled for the reason and in the manner herein provided.
State Normal School certificates heretofore issued by the State Normal Schools of this Commonwealth shall entitle their holders to teach for two annual school terms.
Diplomas heretofore issued by the State Normal Schools of this Commonwealth shall entitle their holders to teach without further examination.
24 P.S. § 12-1210