I assume we are talking high school here, right? that makes it harder to have classes go down on a schedule because kids are in classes with different people all day. My high school, back in the day, just had the photographer there for 4 periods in the middle of the day (the three that nearly everyone had lunch in plus the one before that which a decent number of people had free). They were there over three days. The first day all the seniors were expected to get their photos during whichever of those periods they had free on day one, juniors on day two and sophomores on day 3. Those few you did not have any of those times off (me during my senior year--I had 1-6 with no breaks and got off two hours early so I could work more) were expected to figure out which class they could afford to miss a few minutes of, speak to the teacher ahead of time, find someone to give them notes, and then go then.
The photographers were set up on one side of the cafeteria and you could grab a number and then sit to eat until your number came up (which meant they were 5-10 people away from you and you needed to come turn in your folder and fix hair, etc). I think the cafeteria made a point of serving less messy options those days, but overall they trusted us to manage to eat without destroying our clothes.
It worked fine for our school of about 2100 kids and it only took about 10 minutes out of our 45 minute lunch--no class time was lost. Only one typed note came out about the system--I don't think most parents ever saw it.
A far as daily emails from a high school. Honestly? I think that is seriously encouraging helicopter parents. We did not even have daily announcements at that age--maybe one every week or two. What can they possibly need to tell you about DAILY? Our high school expected kids to know when cheer practice, theatrical rehearsals, sports practices, Spanish club, etc took place if they were in those clubs00no need to announce it to the entire school. We were also expected to check the calendar that came out at the beginning of the year (now you could put that online even) for things like dances, pep ralleys, games, shows and back to school nights. Only a change of plans or random issue (entrance to the parking lot is going to be closed due to construction go in the exit next week, or some such) needed to be communicated in between. I would think things have not changed so much that this much information has to come out daily and get into parents hands. It is like spoon feeding the parents stuff that they should be able to look up online and which they should be able to count on their kids telling them about anyway. I would really be mad if my tax dollars were going for someone to type that email every day and send it out to parents and kids who would not bother to find out for themselves.