Yes. France's US State Department rating is Level 2 ("exercise
increased caution") — the same as Italy, the UK, Germany, and most
of Western Europe — and the elevated level reflects generic European
terrorism risk, not anything specific to the Loire Valley. Blois is
a small provincial town with very low violent-crime rates; the
practical risk profile on a student group trip is minor
pickpocketing at the Royal Château entrance queue and at Chambord's
main ticket hall in peak season, plus the usual caution around the
SNCF train station late at night.
On a Passports teacher-led trip, the group is never on public
transport alone, the Tour Director runs a pickpocket-awareness
briefing on the first evening, and every hotel is pre-vetted for
24-hour reception and secure room storage. We operate a 24/7
emergency line out of Boston, keep parents on a daily-update
channel, and have English-speaking medical contacts in every region
we visit. For most teachers running their first school group tour
to France, the Loire Valley leg feels meaningfully easier to manage
than Paris.