I started this system after winter break and it was super easy to set up. I used the site www.exittix.com. Students will need Internet access for this system, so this is best for 1:1 or BYOD schools. I set up my account and my 3 classes in a matter of seconds. There's an option to input each student's name, but I just gave my students the code for their class and lead them through creating their own accounts. Bless their hearts, a handful of students thought they had to go through this process each time, so each day they created a new account for themselves. It only took me a day or two to see what was happening, and I easily corrected their misunderstanding and deleted the old accounts, but I'd definitely let your kids know this account set up is a one time thing, especially if they're younger. (I did this with sixth grade.)
When you first set it up, it might auto-generate classes; if you don't like what you see just click "Edit Class" at the bottom of one of the classes, then "Edit school term, courses, classes" and you can change how many courses you teach and how many classes of each course. You'll want to be sure this part is accurate because you won't be able to copy an assignment from one class to another if they're not the same course.
Anyways, this site has a bunch of assessment types, but I only ever used the "Exit" type. Each day I gave my students one true/false question, one multiple choice, and one open ended. Beware the open ended!!!! The answer $4 is not counted the same as $ 4. It's VERY picky about correct answers; if you put "$4; $ 4" as the two possible answers (the ; separates possible answers) it would require students put a space before $ 4 because you put a space between the ; and $. Like I said, VERY picky. I always told my students NO labels and NO spaces for these answers, and I circulated to check anyone who had questions.
Each day after our practice I would pull up the projector/class version of the screen and Start the exit ticket, which made it viewable to students. The screen then showed their overall class average, the average for each problem, and the students' averages, but the neat part was it used their student IDs so they couldn't tell who was doing well and who was struggling. I had it sort students by score, so the kids who were doing well could see their score and be proud, and the kids who were doing poorly didn't have the whole class seeing a low score.
This went on for about a month before I realized I wasn't getting reliable data, as far as what they knew. It didn't count for a grade, so they didn't care so they didn't try their best. So I turned it into a competition. On the home screen you can see the overall class average for the year. If their class average for the day was higher than their average for the year they earned a letter. My advanced class convinced me that if their average for the day was an A (93% or higher) they'd got two letters. On the side board I spelled out Exit Ticket for each class using earned letters, and when they had spelled out Exit Ticket that class got a reward. My advanced classes got out of doing an advanced/problem-solving homework sheet the next week and my regular class got a pass for 10% added to an assignment. They loved it! They tried their best, took their time, cheered each other on and paid better attention to the notes/practice from that day.
And the data the website generates is awesome! I can't remember it all, and unfortunately it has deleted my classes for last year so I can't go back and look :( but it does save the questions from one year to the next, and you can use any questions created for any of your courses. One random note about the questions: it doesn't do advanced math, but it's super easy to copy and paste a picture into the problem, which I anticipate doing a LOT with my classes this year.
I used this every day we learned/practiced something; so not on test/quiz days. It took anywhere from 5 minutes (absolute value days) to 20 minutes (writing eqations days), but you can adjust the time by adjusting the number and types of questions. It was awesome because even if I was out for the day I could create the assessment and start it from home or the doctors office or wherever I was when it was Exit Ticket time. I HIGHLY recommend you check it out. And if you do please let me know your thoughts and if you have any other ideas of how to use it. I'm already coming up with plans on how to use the Quicklet function this year and I'm pumped :)