Start with your objective
Decide if the puzzle is for spelling practice, unit vocabulary, or sight-word fluency. Your goal drives how many words you include and how long they should be. Spelling lists might use 10 shorter words; a science unit might mix longer terms with a few short anchors.
Mix lengths, avoid “all long words”
Very long words are harder to place in a small grid and can overwhelm struggling readers. Aim for a blend: a few 3–5 letter words, several medium words, and at most one or two stretch words if your grid size allows.
If you use Class Word Search’s builder and the grid fails to generate, shorten the longest words or remove one or two—placement is automatic and may need more space.
Watch for overlapping letters
Words that share many letters (like STONE and NOTES) can make puzzles more interesting but also more ambiguous for beginners. For primary grades, prefer lists with clearer letter patterns until students are confident trackers.
Uppercase and classroom norms
Our tool standardizes letters to uppercase A–Z so photocopies stay legible and match how many early worksheets present letters. If you want students to copy words in lowercase afterward, that’s a great second step after the search.