Wiktionary
straight a
a. (context education English) Pertaining to one who makes straight As. n. (context education English) Grades or marks that are consistently a#en-noun-grade's.
Usage examples of "straight a".
Never had he even imagined so perfect an oval, such a sweet, fair forehead, such delicately pencilled brows, so fine and straight a nose, such wonderful beauty of mouth and chin.
Cadderly reached up and pulled straight a few strands of hair, mostly gray, but with several sandy-colored strands mixed in.
Now he looked at her, as straight a look as he might have given a commander he respected.
On my bedroom wall at home I have an old photograph of him taken by Jackson at Fort Laramie, and for your personal information I got damned near straight A’.