Get the latest Scottish parenting news sent straight to your inbox each week with our newsletter.The time children spend self isolating could be reduced as its confirmed half of all Renfrewshire schools have experienced a positive covid case.Data, collated by the Express, shows that 31 of the area’s 62 schools have had either a pupil or member of staff test positive for the virus this term so far.All but one Renfrewshire high school has been forced to ask pupils to self isolate on at least one occasion.At St Benedict’s High School, track and trace operations have been conducted on five occasions since pupils returned to school full time on April 19.A total of 19 primaries - 38 per cent - have also been impacted by the virus.In all.