The First 100 words should be mastered by Grade 1.

The Second 100 words should be mastered by Grade 2.

The Third 100 words should be mastered by Grade 3.

The remaining list (words 301-1000) should be mastered in Grades 4-5.

Above: Fry 1000 Instant Words - Fry's Second 100 Sight Words

Above: Fry 1000 Instant Words - Fry's Third 100 Sight Words