simple past tense and past participle of set (meaning to divide students into different ability groups)

To save or put aside

Third-person singular simple present indicative form of set by

(intransitive) To begin something with determination; to commence a long and difficult task or project.

Gene for a human protein involved in apoptosis, transcription and nucleosome assembly. / Initialism of Simulated Emergency Test., an amateur radio training exercise.

Initialism of Strategic Energy Technologies. Plan of the European Union. / Initialism of Stock Exchange of Thailand., the national stock exchange of Thailand.

(idiomatic) Permanent; certain; firm.

To render something permanent, certain, or firm.

(idiomatic) To trigger movement or progress; to get going.

plural of set-in sleeve