An Interview Kit is a set of questions that an interviewer should ask the candidate. These questions are not seen by the candidate. They are for the interviewer to refer to when speaking with the candidate. Interviewers can take notes in the interview kit and leave ratings based on how the candidate answers.
An Assessment Test is sent directly to a candidate. You can send the test through Workable and the results will be logged in the candidate's timeline in your account.
Workable integrates with a significant number of assessment providers. Check out the list of the available integrations.