Yes you can connect to them wirelessly and there are number of ways you can do it. Number 4 is the best option for most schools.
1. You can purchase a wireless module at about $110 each – they plug into the projector and then with free software from Epson you can connect to them via your wireless network.
a. Please note you will need an app for your ipads and will only be able to show videos, web pages, text and photos – not currently running apps like angry birds.
2. You can connect a network cable to them and then your projector become part of your network – and you connect to them via software from your computer or the app from your ipad
a. The same restrictions apply to your ipad content.
3. You can purchase an apple TV (@$110) and connect it to your projector via the HDMI – you then need to add the Apple TV to you school network. Once it is on the same network as you ipads you will be able to airplay directly to the projector.
a. No restrictions, what is on your ipad will be shown on screen
b. If you have an apple computer you should also be able to airplay wirelessly
c. If you are using windows machines you will need software like airparrot to stream you laptop to the projector. @$15 per computer. http://www.airsquirrels.com/airparrot/
4. This is my favorite option as it is the cheapest and easiest to achieve - You can get a piece of software call airserver @$15 that turns the computer connected to the projector into an Airplay server (like an Apple TV).
a. This means
That you can use the computer as your main teaching computer - an interact with it.
ii. You can also use ipads when needed with no cables
iii. It can also Miracast – something that newer laptops and non apple tablets have built in. (use airparrot otherwise)
iv. It can be done almost immediately and doesn’t require any cabling or hardware.
AIRSERVER can be purchased and downloaded from here - https://www.airserver.com/Buy/Education
Please note in all options – the touch/pen based interactivity on the board only works with the computer attached to the usb cable – you can’t control your ipad from the board.