CRITICISING Shakespeare is not actually illegal in England, but it is

best left until late in one's career. It is rather like finding fault,

north of the Border, with Robert Burns. One is liable to be set upon in

a dark academic alley and never heard of again. Even Shaw, who preferred

Ibsen, left his disapproval until he was an established playwright

himself. Had his criticism been uttered with only Cashel Byron's

Profession to his credit, he might now be remembered only as ''Corno di

Basseto'', the music critic of the Star. Sir John Gielgud, it will be

recalled, left the revelation that he was bored by Shakespeare until his

90th birthday. ''I'm not proud of it,'' he said. ''But there are quite a

lot of the plays that I've never properly understood.''

It is against this background that John Patten, the Education

Secretary, has been advised by the Royal Society of Arts that pupils

should be introduced to Shakespeare as early as possible. ''By involving

primary schools, Shakespeare will be a friend and not something to be

afraid of,'' said the RSA's Penny Egan. More than 300 children then

watched a professional production of Macbeth. ''It was a bit scary, but

I liked it better than Neighbours,'' said one child. ''Well . . . just

as much.''

A possible solution is being tried at Stratford-upon-Avon itself,

where the Waterside Studio Theatre has opened a series of Shakespeare

plays, each pared down to 30 minutes. Macbeth loses Duncan, Macduff, and

Donalbain, and the cast consists only of the title role, Lady Macbeth,

and Banquo, with the three witches produced by special effects. Local

Shakespearean authorities do not approve, of course. ''It is like paying

#1 at Claridges for a mouthful of goulash,'' said Mr Francis Carr. Like

Burns, the playwright will probably survive it all. ''The remarkable

thing about Shakespeare,'' said Robert Graves, ''is that he really is

very good, in spite of all the people who say he is very good.''