orca Screen Reader on Sugar?

My friend has been tasked with making Sugar learning environment accessible, by means of the Orca screen reader, on a OLPC machine. I tried running orca on Trisquel Sugar; There must be missing pieces; orca did not talk. I'm not sure where to tell my friend to start but promised I'd ask for some ideas on here. If you can help, please contact my friend, Brandon Werner, directly. name at domain or me on gnusocial: name at domainons

Thanks,

Dave