Sandsbury was admitted at Merchant Taylors' School in May 1587, and matriculated, aged 17, as scholar of St John's College, Oxford, 6 July 1593.
In 1596 he was elected to one of the exhibitions given by St Paul's School for the support of poor scholars at the university.
Oxonia ad Protectionem Regis sui omnium optimi filia, pedisequa, Oxford.
He also wrote verses in the university collection on the death of Elizabeth, and Latin tragedies, which were performed by the scholars of the college at Christmas.
[1] For Matthew Gwinne's play Nero, Sandsbury wrote a Latin commendatory poem, dedicated to Justus Lipsius.