The report "Education at a Glance" finds that only 6 percent of the nation's teachers are under the age of 30, whereas 10 years ago that proportion was at 10 percent. The OECD says the aging workforce could trigger a shortage of instructors in the near future.
"In addition to the relatively large proportion of teachers at the upper end of the age spectrum, an increasing concern in Sweden is that teachers are leaving the profession and the challenge remains to recruit and retain new talented professionals," the report read.
The organization also notes that although starting salaries for Swedish teachers are "slightly above the OECD average" their pay will grow very little over the course of their career.
Swedish teachers also feel undervalued. Just 5 percent believe their profession is valued by Swedish society, compared with 59 percent of teachers in Finland and 31 percent in Norway.