Yes, it has some wonderful views because of the light which is very special, almost pearly particularly in the early morning and very blue at midday when it is sunny. Artists just love that area of coastline and flock to paint there.
The mouth of the Somme forms a marshy delta which is the home of many wild birds. Saint -Valery on the southern side is a very attractive little city which is quite popular as a small holiday resort for families as it is quieter than the big names. There is a sweet mini- golf there as well as a sandy beach. Le Crotoy on the other side of the Somme is one terminus of the narrow gauge "Chemin de Fer de la Baie de Somme" (Somme Bay Railway), which is now largely a tourist attraction and runs around the entire length of the bay. It has a lovely sandy beach and several restaurants that sell "Moules+ frites" and freshly caught fish dishes. In between the two the Park of Marquenterre is an area of natural beauty, with lakes, marshes and a rich flora and fauna.
A bit further the little town of Rue, the French equivalent to Rye in Sussex, has a stunningly beautiful Gothic Chapelle du Saint-Esprit and a superb bell tower.
Inland there are the larger towns of Amiens and Abbeville. Despite the ravages caused by the Germans during WW2 Amiens still has one of the most beautiful cathedrals in France, and Abbeville has St. Vulfran's church, erected in the 15th, 16th and 17th centuries .
I have relatives living in the area and since our family is huge and scattered all over France, with loads of cousins, nephews, nieces with babies and small children and quite a lot of oldies are still live and kicking, we gather regularly for a grand reunion in the area at a place called Cap Hornu, south of Saint Valery, and one of the favourite pastimes is the walk along the coast to Saint Valery where grannies look after the infants whilst the parents and teenagers compete on the mini golf. There used to be an excellent art shop near there where painters exhibited and locally made art work was sold, which sadly has now closed, but there are lots of souvenir shops selling a wide range of stuff and one of which sells brilliant carvings of wild birds.
I hope you have a really good time and lovely weather on your school trip.