Complex sentence: His strident views and remarkable efficiency have earned him a formidable reputation in the educational (and particularly the independent) sector: between running schools and writing biographies, he also finds time to direct plays, and recently taught and sat an AS-level philosophy module.
Split into simpler sentences: His strident views and remarkable efficiency have earned him a formidable reputation in the educational (and particularly the independent) sector. Between running schools and writing biographies, he also finds time to direct plays, and recently taught and sat an AS-level philosophy module.