<p>By “northeast” are you including the mid-Atlantic? Have you checked out Swarthmore?</p>
<p>And what do you mean by “science department”? If you had a specific science discipline(s) in mind, people might be able to comment on areas of strength (maybe botany at Connecticut College or astronomy at Haverford), though for the most part LACs will not offer the breadth or depth of specialization you get at larger schools.</p>