Devayani is currently teaching at Church Park School at Anna Salai.
"She has joined us on contract basis, filling in for a teacher who's on leave. She's teaching for class four. Teaching has been on her mind for a while but she told us that other commitments kept her busy. Devayani is really enjoying the experience," a source from the school's management told IANS.
Devayani, who has starred in hit films such as Aanandham, Friends and Suryavamsam, has also worked in television serials such as Kolangal.
She's married to actor Rajakumaran and has two daughters.