This is the 761st most frequent Hebrew word.
מצוין
Excellent.
Here, 'מצוין' is used as an adjective to express a high quality or excellence of the meal.
הארוחה שהכנת היא מצוינת.
The meal you prepared is excellent.
Here, 'מצוין' functions as an adjective complimenting the way the game was played, highlighting the high skill or performance.
שיחקת משחק מצוין היום!
You played an excellent game today!
In this context, 'מצוין' is applied as an adjective describing the quality of the test given by the teacher, implying it was well-made or effective.