I needed additional sight reading practise before taking Grade 2 exam 2016. This 1994 edition was more like the current Grade 3 standard. Each piece is 2 lines as opposed to 1 line, it moves on from fixed 5 fingers and involves an extra scale than the Grade 2 I was taking. Good to challenge yourself though and probably good practise for current Grade 3.
It prepared me to one level higher in difficulty than 2017/18 syllabus. In this book, hand positions change once during the piece, and the pieces are at least 6 bars