This paper proposes a new dataset, ModelNet-R, for 3D point cloud classification and a lightweight graph-based neural network, Point-SkipNet. We refine ModelNet-R to address issues with the existing ModelNet40 dataset, including labeling inconsistency, 2D data mixing, size mismatch, and inappropriate class separation. Point-SkipNet achieves high classification accuracy while reducing computational costs by leveraging efficient sampling, neighbor grouping, and skip connections. Experimental results demonstrate that models trained on ModelNet-R significantly improve performance, and Point-SkipNet achieves state-of-the-art accuracy with significantly fewer parameters than existing models. This highlights the importance of dataset quality in 3D point cloud classification.