disabled friendly website with accessibility accessibility controls

Hi People,

I am in a some what different situation. I work for a school with children with severe learning difficulties. I am trying to build a new website on joomla 3.2.

I need a template that is responsive. So iPad, and mobile friendly but also has accessibility controls to change font sizes and colours. And preferably I want it to work with browse aloud.

An example of somthing similar to what I need is here;-

http://www.autism.org.uk/robertogden?sc_lang=en-GB

I am waiting on a reply from the above web master for advice.

Now for the hard part I need to be able to do this on a shoe string budget. I cant justify taking money away from teaching and learning but I believe given we are a special school we should set an example in the web design community.

If no such solution exists then I believe we as a community should attempt to create a free and open source system for schools and charities alike.

Regards,

Ben