
- Ten Traits of Highly Effective Principals: From Good to Great Performance
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From $34.87 (New)

From $34.87 (New)

| Latest | $34.87 Apr 17, '16 |
| Highest | $37.86 Jun 24, '14 |
| Lowest | $30.02 Aug 25, '15 |
| Average | $35.50 (30d avg) $35.06 (90d avg) $34.83 (180d avg) $34.49 (365d avg) $34.48 (Lifetime average) |
| Added | Jan 1, 2014 |
| Latest | $18.00 Apr 17, '16 |
| Highest | $32.60 Jul 21, '14 |
| Lowest | $5.00 Jul 8, '15 |
| Average | $18.00 (30d avg) $14.93 (90d avg) $14.95 (180d avg) $19.36 (365d avg) $22.47 (Lifetime average) |
| Added | Jan 1, 2014 |
| Latest | $0.80 Apr 17, '16 |
| Highest | $29.99 May 26, '14 |
| Lowest | $0.01 Feb 21, '16 |
| Average | $3.96 (30d avg) $3.92 (90d avg) $4.31 (180d avg) $6.54 (365d avg) $10.81 (Lifetime average) |
| Added | Jan 1, 2014 |
30 day average: 408,825
90 day average: 314,515