This document discusses different types of language tests including proficiency, achievement, diagnostic, and placement tests. It also describes direct versus indirect testing, discrete point versus integrative testing, norm-referenced versus criterion-referenced testing, objective versus subjective testing, computer adaptive testing, and communicative language testing. The purposes of language tests can be general ability in a language or for a specific purpose like studying at a university. Tests should be consistent with course objectives and content to provide helpful backwash for student learning.