Just to help restate the task in more formal way let's start with this (not tested due to lack of DDL and sample data script)

-- Date interval params

declare @sd date ='20130101';

declare @ed date ='20150101';

-- get a set of (Name, ID)s which have any changes in Grade or sec

-- over the interval

select Name, ID

from Tracking_changes

where Systemdate between @sd and @ed

group by Name, ID

having max(Grade) <> min(Grade) or max(sec) <> min(sec);

Is it a step in right direction?