Complex sentence: Karl Pearson was educated privately at University College School, after which he went to King's College, Cambridge in 1876 to study mathematics, graduating in 1879 as Third Wrangler in the Mathematical Tripos.
Split into simpler sentences: Karl Pearson was educated privately at University College School, after which he went to King's College, Cambridge in 1876 to study mathematics. He graduated from Cambridge University in 1879 as Third Wrangler in the Mathematical Tripos.