I think you're probably going to get nowhere on this one. I feel the same as you, and everything is online. I've heard, "It's on the website" a few times over. As far as safety, the school is secure, or at least as secure as they can be. All computers are vulnerable. I'm not overly concerned in this area. The schools take great measures to assure safety. I have expressed that I would prefer a phone call or send a note in the backpack. Back in 2nd grade, they carried "communication folders," so all homework and communication, permission slips to and from went in there. I'm having a little bit of a difficult time with some of this website stuff. I have one on an IEP, so I'm more likely to get personal communication through that. That's been one of my struggles is people don't call me if they recognize a problem and I don't know anything is wrong until the sucky report card comes home. I've been on the phone trying to get them to call me so the issue can be addressed right away rather than after that report card comes home. I've had issues accessing the sites and seeing the sites along the way. It's been a bit of a mess.
I am settling into the computer era. It really does offer a convenience and you can see what's going on right away. Mine are in upper levels, so there are more teachers and classes. I think if you call the teacher and say you would prefer a note in the backpack or a phone call, they'll comply with that. You can probably opt out of that web site. If your child was a behavior problem, they call. Don't worry about that. I've gotten notes when someone injured themselves and had to see the nurse. I've gotten notices when Strep throat is running rampant and reminders to keep your kid home if they're sick during cold and flu season. My child triggered the 1st grade pinkeye letter. We have no idea where she picked that up, but we all got it, she shared.
When you get some of the assignments home, if she's pulling low scores, call the teacher.
It doesn't sound like you have anything to really worry about. No news is good news.
I think if you just call up your child's teacher and just tell them you prefer notes or a phone call, they can comply. I'm with you on how you feel.