Standardized tests compare students' performance to that of a norming or sample group who are in the same grade or are of the same age. Students' performance is communicated in percentile ranks, grade-equivalent scores, normal-curve equivalents, scaled scores, or stanine scores.
Informal tests generally do not have a set of standard directions. They have a great deal of flexibility in how they are administered. They are constructed by teachers and have unknown validity and reliability.
Examples: Review games; Quizzes
Static (Summative) Tests
Measures what the student has learned.
Examples: End-of-chapter tests; Final examinations; Standardized state tests
Dynamic (Formative) Tests
Measures the students' grasp of material that is currently being taught. Can also measure readiness. Formative tests help guide and inform instruction and learning.