by Christopher Harris Premium Content Subscriber only Thousands of primary school students will spend their summer holidays at coaching colleges grappling with tricky logic questions introduced in an overhaul of NSW selective school tests. The long awaited official practice test was released to parents on Friday, sending tutoring companies scrambling to finetune their school holiday curriculum. About 15,000 Year 5 students are expected to sit the selective high school exam next March but competition will be fierce with only 4226 positions on offer for Year 7 entry in 2022. The government announced in October it would revamp the entrance exam in a bid to make the test more challenging so the smartest students, not just the most tutored, gain entry into selective schools such as James Ruse Agricultural College.