Who do they think they are? That's the question Professor Thomas Groome, of Boston College, a well-known religious educator, will raise at next Saturday's Religious Teachers Assocation (RTA) seminar and agm. Groome, a Dubliner, will also be asking that perennial puzzler - what's it all about? The RTA's seminar will look at "the role of religious education, the place of teachers and students as we embark upon the third millennium of Christianity." All teachers of religion are welcome. Registration at Holy Cross College, Clonliffe Road, Dublin, is between 9.30 and 10 a.m.