the wage gap has clear reasons (mens' jobs are better paid, women get promoted less) and thus clear solutions (stop discriminating against women at hiring/promotion time, or improve women's retention thus allowing them to stick in a job for longer, improving their chances at a promotion), even if these solutions are easier said than done.
the life expectancy gap instead... what are the reasons? I suspect that in some cultures it can be because of gender-specific abuse of alcohol... but if that's the reason ( or even if otherwise if the reason is biological) I'm not sure that we have an obvious solution to the problem.
Also, I presume that language test score could be as concerning as math test scores... but the latter will help students pursue a STEM career, which is better remunerated than a career that makes use of knowledge of languages. From that point of view, to improve opportunities later in life, fixing math scores can have priority.