On the other hand, all of them showed progressive and significant deficits in concentration, motivation, perception and other higher mental processes as the duration of sleep deprivation increased. (scientificamerican.com)
Therefore, when states face significant deficits, funding for education must be cut. (educationnext.org)
Many are already feeling the pinch, with an increasing number getting into significant deficit during the year. (schoolsweek.co.uk)