Disadvantages of joint operation are found in different wage-agreements, different working schedules in preschool and elementary schools, established school culture and different views of the employees.
Ókostir samrekstrar felast helst í ólíkum kjarasamningum og starfstíma leik- og grunnskólakennara, fastmótaðri skólamenningu og ólíkum viðhorfum starfsfólks.