Online teaching came into the spotlight for many students and parents in the last year, and today one of the companies that saw a big lift during that rush of activity is announcing a big round of funding to carry it into what has emerged as a more permanent change of habits for many learners.

GoStudent, a marketplace where K-12 students (and their parents) can find and engage with one-to-one video-based tutors in a variety of subjects, has raised €205 million ($244 million) in a Series C round that values the company at €1.4 billion ($1.7 billion).

The funding is coming at a time of strong growth. The Vienna, Austria-based startup is now live in 18 countries and sees some 400,000 sessions booked monthly on its platform, up 700% year-on-year (and up 15% month-on-month). It says it is on track to double employees to 1,000 and reach 10,000 tutors by the end of this year. The plan is to expand to more countries — Mexico and Canada are next on the list — and to continue growing its lists of tutors and subjects covered.

(As a point of comparison, when it last fundraised in March, GoStudent was booking a mere 250,000 tutoring sessions over its platform.)