Here is the corrected version. My mistake was returning a value before toggling @solved for one of the branches. Thanks to Sean for seeing what my eyes were glazing over.

GuessingGame.rb

class GuessingGame

  # this is just a crapshoot, doesn't seem to help or hinder
	attr_accessor :solved
	attr_accessor :answer_int

	def initialize(answer_int)
		@answer = answer_int
		@solved = false
	end

	def guess(guess_int)

		# return :low, :correct, or :high
		if(@answer < guess_int)
			@solved = false
			return :high
		elsif (guess_int == @answer)
			@solved = true
			return :correct
		elsif (guess_int < @answer)
			@solved = false
			return :low
		else
			@solved = false
			raise "guess_int not registering as an int"
		end

	end

	def solved?
		# returns true or false
		@solved
	end

end