For a third straight year, the Hood River County School District is seeing a slight decline in enrollment.  Superintendent Dan Goldman says they are down about 50 to 60 students from last school year, coming off decreases of 20 to 30 the previous two years, and the reductions are at the younger grades.  Goldman says at this point they have to consider it a trend, noting while the Hood River Valley continues to see housing starts that is not bringing corresponding increases in students.  Funding levels for school districts in Oregon are determined on a per student allocation.