School Postcard seen on eBay

The unused postcard has been wrongly labelled by hand as the Sir Henry Mellish School. Given the caption used by the printers, the appearance of the children and the newly-planted look of the shrubs my guess is that was taken in 1929 or early 1930 soon after the school opened. It is occupied because the windows in 2A, 3A and the office are open. Spring 1930 maybe?